package com.gzsxy.lesson01.udp;

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;


/**
 * udp还是要等待客户端的连接
 * 接收端
 */
public class UdpServerDemo01 {
    public static void main(String[] args) throws Exception {
        //开放端口
        DatagramSocket socket = new DatagramSocket(9090);
        //接收数据包
        byte[] buffer = new byte[1024];
        DatagramPacket packet = new DatagramPacket(buffer, 0, buffer.length);

        socket.receive(packet); //阻塞接收

        System.out.println(packet.getAddress().getAddress());
        System.out.println(new String(packet.getData(), 0, packet.getLength()));

        //关闭连接
        socket.close();

    }
}
